Circuit-breaker.



IPATENTEYD JUNE so, 1903.

H. P. BALL. CIRCUIT BREAKER. APPLICATION FILED JAN. 2o. 19o2.

2 SHEETS-SHEET 1.

N0 MODEL.

Hlllllllllll llll PATENTED JUNE 30, 1903.

H. P. BALL. CIRCUIT BREAKER.

APPLICATION FILED JAN. 29, 1902.

2 SHEETS-SHEET 2.

N0 MODEL.

No. 732,253. 7 Patented June 30, 1903.

UNITED STATES PATENT OFFICE.

HENRY PRICE BALL, OF NEW YORK, N. Y., ASSIGNOR TO GENERAL INCAN- DESCENT ARC LIGHT COMPANY, OF NEYV YORK, N. Y., A CORPORATION.

CIRCUIT-BREAKER.

SPECIFICATION forming part of Letters Patent No. 732,253, dated June 30, 1903.

Application filed January 29, 1902. Serial No. 91,745. (No model.)

To all whom it may conoern: the switch-blade was shown and described as Be it known that I,'HENRY PRICE BALL, a attached directly to or forming a part of the citizen of the United States, residing at New switch-blade. In my present construction York city, county and State of New York, the handle consists of the independent lever have invented certain new and useful Im- 12, pivotally secured to the supporting-plate 55 provements in Circuit-Breakers, of which the 5 at 13, and the bent or shaped lever 14, pivotfollowing is a specification. ally secured to the switch-blade '7 at 15 and My invention relates to certain improveto the lever 12 at 16. ments in the circuit-breaker described in my In my former patent the latch 8 coacted 10 former patent, No. 686,918, dated November with a transverse pin in the switch-blade 7 6o 19, 1901, and which improvements consist, to hold the switch-blade inthe locked position. first, in providing an operating-handle for the In my present construction the latch 8 coacts switch blades which will exert a graduallywith the transverse pin 17 in the forward end increasing leverage upon the switch blade or of the bent lever H. a blades,and therebyenable thecircuit-breaker, It will be understood that by reason of the especially in large sizes, to be more readily construction of the levers 12 and 1 1 as the closed than is the case where a handle of the lever 12 is carried upward into a horizontal type described in my former patent is emposition the pressure exerted upon the-switchployed; second, in providing an extra pair blade 7 and through the switch-blade upon 20 of spring-contacts adapted to be bridged by the main bridge-piece of the device 18 will be the switch-blade before the main contacts are constantly increased until the latch S engages bridged by the independent bridge-piece. with the pin 17 in the bent lever 1 1.

The accompanying drawings will serve to Referring now to the second feature of my illustrate my invention, and in which similar improvement. Connected to the supporting- 2 5 numerals indicate like parts. plate 5 are the springs 19. These springs are Figure 1 is a side elevation. Figs. 2 and 3 in the path of movement of the switch-blade are views in perspective looking from the left 7 and when the switch-blade 7 is moved forand respectively showing the circuit-breaker ward they coact with the contacts 20 on the closed and open. upper end of the switch-blade and under the 30 In. my former patent, No. 686,918, dated carbon contacts 21, which coact with the November 19, 1901, I have described and springsupported carbon contacts 22. The claimed the general features of construction object of these springs is to insure contact of the circuit-breaker, and it will therefore between the switch-blade 7 and the circuitonly be necessary in the present application terminals before the main terminals 23 are 3 5 to describe the circuit-breaker generally and bridged by the bridge-piece 18. then point out the various improvements 24 is a spring connected at one end to the which I have made therein. switch-blade 7 and at the other end to a lug In the drawings the general construction 25 on the bentlever 14,which spring is adapted of the circuit-breaker consists of a suitable to exert tension upon the lever 14 when the 40 switchboard or supporting plate 5; 6, a switch is closed, thereby aiding in the down- 0 bracket projecting from the switchboard and ward movement of the lever 14 when this leoarrying a pivoted switch-blade '7; 8, latch ver is released by the upward movement of which serves to hold the switch-blade in a the latch 8. closed position 9, pivotally-supported insu- Having thus described my invention, I

45 lated bar under latch; 10, magnet within vclaim which is a loose armature, (not shown,) which 1. In an automatic circuit-breaker, the comin its upward movement coacts with the pin bination of contact-blocks, a reciprocating 11 under the insulated bar 9 and serves to bridgedevice,a pivoted switch-blade arranged lift the latch 8 and release the switch-blade 7. independent of the bridge device, contacts 50 111 my former patent the handle for closing with which said switch-blade coacts, a latch, IOO

and a lever device separate from the bridge device and adapted to exert an increasing pressure upon said bridge device and switchblade, from the open to the closed position, and to coact with said latch to hold said parts in a closed position.

2. In an automatic circuit-breaker, the com bination of a supporting base, a pivoted switch-blade, a latch, a lever pivoted to said base, and a bent lever pivotally connected to said first-named lever and to said switchblade and carrying a device which will coact with said latch to lock said switch-blade and levers in the closed position.

In an automatic circuit-breaker,the combination of a supporting-base, contact-blocks on said base, a reciprocating bridge device, a pivoted switch-blade arranged independent of the bridge device, contacts with which said switclrblade coacts, a lever pivoted to said supporting-base, a bent lever interposed between the first-named lever and the pivoted switch-blade, and a latch adapted to coac't with said bent lever to lock the parts in a closed position.

l. In an automatic circuit-breaker,the com.- bination of a supporting-base,contact-blocks, a reciprocating bridge device, a pivoted switch -blade arranged independent of the bridge device, contacts with which said switch-blade coacts, a lever pivoted to the base, a bent lever interposed between the first named lever and the pivoted switch-blade, a latch for locking the parts in a closed position, and an electroresponsive device adapted to release the latch.

5. In an automatic circuit-breaker,the combination of contact-blocks, a reciprocating bridge device, means separate from the bridge device and adapted to exert an increasing pressure upon said bridge device to force said bridge device into close contact with the contact blocks, and means for holding said bridge device in a closed position.

6. In an automatic circuit-breaker,the combination of contact blocks, a reciprocating bridge device, means separate from the bridge device and adapted to exert an increasing pressure upon said bridge device from the open to the closed position, means for looking the bridge device in the closed position, and means for releasing the bridge device to open the circuit-breaker.

7. In an automatic circuit-breaker,the co1nbination of a supporting-base, a pair of vertically-disposed and separated contact-blocks, a horizontallyreciprocating spring bridge device, a pivoted switch-blade independent of the bridge device, contacts with which said switch-blade coacts, a lever pivoted between the contact blocks, a lever interposed between the first-named lever and the switchblade, said lever provided with an arm carrying a pin, a latch adapted to coact with said pin, a pivoted bar located under said latch, and electroresponsive means for lifting said bar to release the latch.

S. In an automatic circuit-breaker,the eo1nbination of a supporting-base, contact-blocks, a reciprocating bridge device, a switch-blade arranged independent of the bridge device, a pivoted lever separate from the bridge device, and means interposed between said lever, switch-blade and bridge device whereby a constantly-increasin g pressure will be exerted upon such parts from the open to the closed position.

In testimony whereof I aflix my signature in the presence of two witnesses.

HENRY PRICE BALL.

\Vitnesses:

J. 13. CowEN, I. WERTHEIMER. 

